<?php
/**
 * Copyright (c) 2010, Slawomir Mazur <mazursllawek@gmail.com>
 * 
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions 
 * are met:
 * 
 * o Redistributions of source code must retain the above copyright notice, 
 *   this list of conditions and the following disclaimer.
 * o Redistributions in binary form must reproduce the above copyright notice,
 *   this list of conditions and the following disclaimer in the documentation
 *   and/or other materials provided with the distribution.
 * o Neither the name of the Softisland nor the names of its contributors
 *   may be used to endorse or promote products derived from this software
 *   without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 
 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
/**
 * Enter description here...
 *
 * @package     Library
 * @copyright   Slawomir Mazur (c) 2010 (http://www.zend.com/zce.php?c=ZEND011643)
 * @license     http://www.opensource.org/licenses/bsd-license.php
 * @author      Slawomir Mazur <mazursllawek@gmail.com>
 */

class Gp_App
{
	private static $_config = null;
	
	private static $_models = array();
	
	public static function getModel($modelClass = '', $arguments = array())
	{
		return self::getConfig()->getModelInstance($modelClass, $arguments);
	}
	
	public static function getSingleton($modelClass = '', $arguments = array())
	{
		$singletonIdentifier = '__singleton|' . $modelClass;
		
		if (!isset(self::$_models[$singletonIdentifier])) {
			self::$_models[$singletonIdentifier] = self::getConfig()->getModelInstance($modelClass, $arguments); 
		}
		
		return self::$_models[$singletonIdentifier];
	}
	
	/**
	 * Get global config
	 * 
	 * @return Gp_Core_Config
	 */
	public static function getConfig()
	{
		if (is_null(self::$_config)) {
			self::$_config = new Gp_Core_Config();
		}
		return self::$_config;
	}
	
	/**
     * Write exception to log
     *
     * @param Exception $e
     */
    public static function logException(Exception $e, $extras = null)
    {
    	/* @var $log Zend_Log */
        if (!$log = Zend_Registry::get('log')) {
            return;
        }
        $log->log($e->__toString(), Zend_Log::ERR, $extras);
    }
}